单项选择题

Which of the following is not included in the cost of the trip

A．Planning the mission.
B．Modifying a spacecraft.
C．Completing manned and unmanned test flights.
D．Training astronauts.
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单项选择题
When did the Atlantic hurricane season begin
A．July 1.
B．January 1.
C．June 1.
D．Nov. 30.
单项选择题
Which statement is NOT true about Irene
A．It is the name of a storm.
B．It was expected to become stronger.
C．It could develop into a hurricane.
D．It had top sustained winds about 39 mp
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